Belt/disc sander with quick release and locking means for swingable bed

Abstract

A quick release for enabling a belt bed in a belt sander to be selectively rotated 90° from the horizontal to the vertical in a simple manner. A C-shaped collar forms a portion of the frame and a support is attached to the belt bed and positioned within the C-shaped collar. The C-shaped collar may be tightened about the support in either the horizontal or vertical position of the belt bed to maintain the bed in the selected position.

We claim: 
     
       1. In a belt/disc sander having both a disc sander and a belt sander, a quick release for enabling a belt bed for the belt sander to be selectively rotated 90° from the horizontal to the vertical comprising: a frame;   a C-shaped collar with a smooth inner surface forming a portion of the frame;   a circular support structure attached to the belt bed and having a smooth outer surface positioned within and in mating contact with the smooth inner surface of the C-shaped collar for enabling the belt bed to be selectively rotated 90° from a horizontal position to the vertical position;   means for tightening the C-shaped collar about the support means in either the horizontal or vertical position of the belt bed to maintain the bed in the selected position;   a bed position indexing pin extending outwardly from the C-shaped collar; and   a pin engaging means associated with the circular support structure for engaging the bed position indexing pin at 0° and 90° positions of the belt bed to provide a positive stop for positioning the belt bed accurately in the 0° and 90° positions.   
     
     
       2. A belt sander as in claim 1 wherein said means for tightening said C-shaped collar comprises: a recess in each outer end of the C-shaped collar;   an orifice extending from one recess through the other recess in alignment with each other; and   a bolt inserted in said orifice which, when tightened, locks said C-shaped collar to said circular support structure so as to lock said bed in the selected position.   
     
     
       3. A belt sander as in claim 1 wherein said pin engaging means comprises: an annular fixture extending through said C-shaped collar;   a first inwardly extending flange on a first end of said annular fixture on the inside of said C-shaped collar for attachment to said circular support structure;   a second outwardly extending flange on the other end of said annular fixture on the outside of said C-shaped collar such that when said belt bed is rotated from 0° to 90°, said second flange rotates with said belt bed;   an arcuate recess in said second flange for receiving said indexing pin; and   a first shoulder in said recess for engaging said indexing pin at a 0° horizontal bed position and a second shoulder for engaging said indexing pin at a 90° vertical belt bed position so as to provide automatic stops at the correct 0° and 90° belt bed positions.